Is it normal for devs to have projects piled up before a successful one?

In my case, I had 2-3 projects lined up which are not active at all. I stopped working with those web applications as it didn't seem reasonable to. There are 2 of them active on web but not seen by me.

I have also seen that founders tend to have a lot of projects they have abandoned. Some of the founders even told that there projects failed and it is well above 5 projects.

I would like to know, whether it is me or everyone experienced this?